package/uuu: bump to version 1.4.243

The hash of README.md has changed because the link to the zstd license
has been added:

- ``
+ `- zstd (Dual BSD\GPLv2 Licenses) is from https://github.com/facebook/zstd`



Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>